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Finding the Fourth Proportional to 12,863.89, 19,280.44 and 6,626.89

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Solution

The fourth proportional to 12,863.89, 19,280.44 and 6,626.89 is: 9,932.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,863.89 : 19,280.44 = 6,626.89 : x
  2. Step 2: Convert to fraction form
    12,863.89/19,280.44 = 6,626.89/x
  3. Step 3: Cross multiply
    12,863.89x = 19,280.44 × 6,626.89
  4. Step 4: Simplify right side
    12,863.89x = 127,769,355.03
  5. Step 5: Solve for x
    x = 127,769,355.03/12,863.89
  6. Step 6: Final answer
    x = 9,932.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.